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连接深圳水库大坝和水库内闸门井室的工作桥,是一座焊接式钢桁架拱架。拱桥跨长40米,拱高2.5米,矢跨比1/16,桥面为钢筋混凝土结构。两主桁架距2米。拱桥采用双铰拱,为一次超静定结构。安装支座的桥台一端与大坝相连接,另一端即闸门井井台。拱桥施工期间,水库内水位较高。根据该桥特点,考虑施工现场情况和我单位现有施工设备条件,确定了在地面上制造,整跨一次起吊安装的施工方法。
Working bridge connecting Shenzhen reservoir dam and reservoir gate chamber is a welded steel truss arch. Arch bridge span 40 meters, 2.5 meters arch height, pitch than 1/16, bridge deck for the reinforced concrete structure. The two main truss from 2 meters. Arched arch double hinge, as a statically indeterminate structure. One end of the abutment to which the abutment is mounted is connected to the dam and the other end is a gate well. During the construction of arch bridge, the water level in the reservoir is higher. According to the characteristics of the bridge, taking into account the situation at the construction site and the current conditions of construction equipment in our unit, we have determined the construction methods that are manufactured on the ground and hoisted and installed across the span.